Timestamp lost in Continuous Replication

olivierlambert

Ping @florent

ph7

Ant they are full
Screenshot 2026-03-14 at 09-09-23 Backup.png

Screenshot 2026-03-14 at 09-41-08 Backup.png

Danp

@ph7 Do you know which commit you were on previously? Also, it may help if you can share the full backup log.

ph7

I was on 5bdd7 installed at 202603091803

ph7

{
  "data": {
    "mode": "delta",
    "reportWhen": "failure"
  },
  "id": "1773474108084",
  "jobId": "3dcd13a8-de8b-47b6-945b-12dbad9c6234",
  "jobName": "ContRep",
  "message": "backup",
  "scheduleId": "522d611e-7cd9-4fe0-a9e1-b409927cd8c8",
  "start": 1773474108084,
  "status": "success",
  "infos": [
    {
      "data": {
        "vms": [
          "b1940325-7c09-7342-5a90-be2185c6d5b9",
          "86ab334a-92dc-324c-0c42-43aad3ae3bc2",
          "0f5c4931-a468-e75d-fa54-e1f9da0227a1"
        ]
      },
      "message": "vms"
    }
  ],
  "tasks": [
    {
      "data": {
        "type": "VM",
        "id": "b1940325-7c09-7342-5a90-be2185c6d5b9",
        "name_label": "PiHole wifi"
      },
      "id": "1773474110343",
      "message": "backup VM",
      "start": 1773474110343,
      "status": "success",
      "tasks": [
        {
          "id": "1773474111649",
          "message": "snapshot",
          "start": 1773474111649,
          "status": "success",
          "end": 1773474113141,
          "result": "d4b0607f-0837-c7ae-5c2d-6426995470bd"
        },
        {
          "data": {
            "id": "4f2f7ae2-024a-9ac7-add4-ffe7d569cae7",
            "isFull": true,
            "name_label": "Q1-ContRep",
            "type": "SR"
          },
          "id": "1773474113142",
          "message": "export",
          "start": 1773474113142,
          "status": "success",
          "tasks": [
            {
              "id": "1773474114002",
              "message": "transfer",
              "start": 1773474114002,
              "status": "success",
              "tasks": [
                {
                  "id": "1773474189159",
                  "message": "target snapshot",
                  "start": 1773474189159,
                  "status": "success",
                  "end": 1773474190075,
                  "result": "OpaqueRef:fa356b5f-4b25-d3e6-5507-6ed81c32b1d8"
                }
              ],
              "end": 1773474190075,
              "result": {
                "size": 4299161600
              }
            }
          ],
          "end": 1773474190682
        }
      ],
      "end": 1773474191523
    },
    {
      "data": {
        "type": "VM",
        "id": "86ab334a-92dc-324c-0c42-43aad3ae3bc2",
        "name_label": "Home Assistant"
      },
      "id": "1773474191534",
      "message": "backup VM",
      "start": 1773474191534,
      "status": "success",
      "tasks": [
        {
          "id": "1773474191707",
          "message": "snapshot",
          "start": 1773474191707,
          "status": "success",
          "end": 1773474193196,
          "result": "c3f038c3-7ca9-cbbb-9f84-61e1fd30c9d5"
        },
        {
          "data": {
            "id": "4f2f7ae2-024a-9ac7-add4-ffe7d569cae7",
            "isFull": true,
            "name_label": "Q1-ContRep",
            "type": "SR"
          },
          "id": "1773474193196:0",
          "message": "export",
          "start": 1773474193196,
          "status": "success",
          "tasks": [
            {
              "id": "1773474194123",
              "message": "transfer",
              "start": 1773474194123,
              "status": "success",
              "tasks": [
                {
                  "id": "1773474462529",
                  "message": "target snapshot",
                  "start": 1773474462529,
                  "status": "success",
                  "end": 1773474463434,
                  "result": "OpaqueRef:c13f3cab-29c8-4ef0-253f-de5998580cd9"
                }
              ],
              "end": 1773474463434,
              "result": {
                "size": 15548284928
              }
            }
          ],
          "end": 1773474464311
        }
      ],
      "end": 1773474466186
    },
    {
      "data": {
        "type": "VM",
        "id": "0f5c4931-a468-e75d-fa54-e1f9da0227a1",
        "name_label": "Sync Mate"
      },
      "id": "1773474466193",
      "message": "backup VM",
      "start": 1773474466193,
      "status": "success",
      "tasks": [
        {
          "id": "1773474466371",
          "message": "snapshot",
          "start": 1773474466371,
          "status": "success",
          "end": 1773474470399,
          "result": "36a17271-1c2f-4b26-0d86-dc0faf27fa17"
        },
        {
          "data": {
            "id": "4f2f7ae2-024a-9ac7-add4-ffe7d569cae7",
            "isFull": true,
            "name_label": "Q1-ContRep",
            "type": "SR"
          },
          "id": "1773474470399:0",
          "message": "export",
          "start": 1773474470399,
          "status": "success",
          "tasks": [
            {
              "id": "1773474471561",
              "message": "transfer",
              "start": 1773474471561,
              "status": "success",
              "tasks": [
                {
                  "id": "1773476263789",
                  "message": "target snapshot",
                  "start": 1773476263789,
                  "status": "success",
                  "end": 1773476264925,
                  "result": "OpaqueRef:88bd55f4-64ea-fb16-f389-4b9f42ac459f"
                }
              ],
              "end": 1773476264925,
              "result": {
                "size": 105526591488
              }
            }
          ],
          "end": 1773476267354
        }
      ],
      "end": 1773476268187
    }
  ],
  "end": 1773476268187
}

ph7

The latest XCP-ng update had an update regarding NTP

XAPI, XCP-ng's control plane, was updated to version 26.1.3.
Added API for controlling NTP.

This might be a longshot and I don't know it this has anything to do with my "problem"
The timestamp on ContRep VM's has always been in UTC
I'm using Stockholm SE as timezone and other bugs regarding presentation of time have been fixed but not this one,

ph7

I did a rollback to 5bdd7 and got the date back and also delta

ph7

I did get a snapshot at one of the CR VM's with the 449e7 version.
I don't with 5bdd7

florent

@ph7 yes this is expected even if we did not have time to communicate on this yet : https://github.com/vatesfr/xen-orchestra/pull/9524

the goal is to have more symmetry between the source ( on VM with snapshots ) and the replica ( on VM with snapshots) . The end goal is to use this to be able to reverse a PRD , and to allow advanced scenarii like VM on edge site => replica on center site => backup on central servers

but it should not do full backups, it should respect the delta / full chain

fbeauchamp opened this pull request in vatesfr/xen-orchestra

closed feat(backups): symetrical backups #9524

Pilow

@florent Florent, I could see the benefits of unified VM name, but could you at least push the timestamp in a note on the VM ?
it is important to know wich timestamp a replica VM is, in order to choose failover option wisely

florent

@Pilow the timestamp is on the snapshot, but you're right, we can add a note on the VM with the last replications informations

note that the older VMs replicated will be purged when we are sure they don't have any usefull data , so you will have only one VM replicated , wuth multiple snapshots

Pilow

@florent ho nice
we had as many "VMs with a timestamp in the name" as number of REPLICAs, and multiple snapshot on source VM
now we have "one Replica VM with multiple snapshots" ? Veeam-replica-style...
do multiple snapshots persists on source VM too ?

if it's true, that's nice on the concept.

but when your replica is over lvmoiscsi not so nice

ps : i didnt upgrade to last XOA/XCP patchs yet